发明名称 Activation and indication of an RF field on a device including a chip
摘要 A device includes a main antenna suitable for capturing and transmitting an RF signal, at least one chip containing information and configured to transmit the information via the main antenna in response to an excitation of an external RF signal, and a mechanism for activating and deactivating the main antenna. The device further includes a detection circuit for detecting the presence of the external RF signal, and an indicator circuit, which is connected to the detection circuit so as to indicate the presence.
申请公布号 US9189725(B2) 申请公布日期 2015.11.17
申请号 US201013513439 申请日期 2010.12.02
申请人 UINT 发明人 Blot Philippe;Mobetie Didier;Renaud Jean-Charles
分类号 G06K19/06;G06K19/073;G06K7/10;G06K19/07 主分类号 G06K19/06
代理机构 Greer, Burns & Crain, Ltd. 代理人 Greer, Burns & Crain, Ltd.
主权项 1. A device comprising: a main antenna suitable for capturing and transmitting a radio frequency signal called RF signal, at least one chip containing information and configured for transmitting this information via the main antenna in response to an excitation of an external RF signal, and a mechanism for activating and deactivating the main antenna by selectively connecting and disconnecting an interrupted link between the main antenna and the at least one chip; a detection circuit for detecting the presence of the external RF signal, and an indicator circuit, connected to the detection circuit, so as to indicate said presence, the activation and deactivation mechanism and the detection circuit are arranged so that the activation and deactivation mechanism only activates the main antenna on the double condition that the indicator circuit receives an activation instruction from a user and that the detection circuit reports the presence of the external RF signal to the indicator circuit.
地址 Orsay FR